Question 1
(a)
Briefly explain: System calls
3 Marks
(b)
Differentiate between Multiprogramming and Multitasking.
4 Marks
(c)
Draw Process state transition diagram and explain each state in brief.
7 Marks
Gujarat Technological UniversitySummer 2026 Examination
GTU 3141601 Operating System and Virtualization Summer 2026 Paper Solution & PDF
B.E. · IT Engineering · Semester 4 · Subject Code: 3141601
Total Marks70 MarksExternal theory exam
Passing Marks23 Marks33% minimum cutoff
Exam Duration2.5 Hours10:30 AM – 1:00 PM
Paper Structure5 QuestionsWith internal OR choices
Question 2
(a)
Differentiate between Process and Thread
3 Marks
(b)
Explain: Semaphores
4 Marks
(c)
Consider following data and calculate Average Waiting Time and Average Turn Around Time if Shortest Job First (SJF) scheduling is applied.
| Process | Arrival Time | Burst Time |
|---|---|---|
| P1 | 0 | 6 |
| P2 | 1 | 8 |
| P3 | 2 | 7 |
| P4 | 3 | 3 |
7 Marks
OR OPTION
(c)
Consider following data and calculate Average Waiting Time and Average Turn Around Time if First Come First Serve (FCFS) scheduling is applied.
| Process | Arrival Time | Burst Time |
|---|---|---|
| P1 | 0 | 6 |
| P2 | 1 | 8 |
| P3 | 2 | 7 |
| P4 | 3 | 3 |
7 Marks
Question 3
(a)
Differentiate between Deadlock and starvation.
3 Marks
(b)
Explain the four necessary conditions of deadlock.
4 Marks
(c)
What conditions must be satisfied for effective Inter-Process Communication (IPC)? Explain briefly.
7 Marks
OR OPTION
(a)
Explain Race condition with an explain.
3 Marks
(b)
Explain resource allocation graph in deadlock.
4 Marks
(c)
Give the solution of Dinning Philosopher Problem.
7 Marks
Question 4
(a)
Briefly explain Swapping.
3 Marks
(b)
Explain: Paging
4 Marks
(c)
Consider the following page reference string: 2, 0, 1, 2, 3, 3, 6, 1, 2, 5, 0, 3, 2, 5, 2, 6, 1, 4, 0, 4. How many page faults and page replacement would occur for FIFO and Optimal page replacement algorithms, considering 3 free frames?
7 Marks
OR OPTION
(a)
Explain the concept of Demand paging.
3 Marks
(b)
Explain: Segmentation
4 Marks
(c)
Consider a paging system with TLB in which 70% TLB hit occurs. If system takes 30 nanoseconds to search a page from TLB and 150 nanoseconds to access memory what is the effective access time?
7 Marks
Question 5
(a)
Write a shell script to check that the entered number is EVEN or ODD.
3 Marks
(b)
Differentiate between ESX server and VMware server.
4 Marks
(c)
Explain the working of Direct memory access (DMA).
7 Marks
OR OPTION
(a)
Explain role and functionality of Kernel.
3 Marks
(b)
Briefly explain Virtualization.
4 Marks
(c)
Explain: RAID
7 Marks
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About this Examination Paper & Attribution
Official Gujarat Technological University (GTU) examination paper and step-by-step solutions for Operating System and Virtualization (Summer 2026, B.E. · IT Engineering, Sem 4). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.